Home / 20,780.45-31,184.32-7,632.93

Finding the Fourth Proportional to 20,780.45, 31,184.32 and 7,632.93

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Solution

The fourth proportional to 20,780.45, 31,184.32 and 7,632.93 is: 11,454.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.45 : 31,184.32 = 7,632.93 : x
  2. Step 2: Convert to fraction form
    20,780.45/31,184.32 = 7,632.93/x
  3. Step 3: Cross multiply
    20,780.45x = 31,184.32 × 7,632.93
  4. Step 4: Simplify right side
    20,780.45x = 238,027,693.49
  5. Step 5: Solve for x
    x = 238,027,693.49/20,780.45
  6. Step 6: Final answer
    x = 11,454.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.